Atletico Madrid have been fined 6,000 euros ($7,132) by the Spanish Football Federation (RFEF) after a section of their fans hurled racial abuse at Espanyol goalkeeper Carlos Kameni in a league match last month.
Although the abuse was not noted in referee Arturo Dauden Ibanez's match report, the RFEF said it acted after a complaint from the government-run Anti-violence Commission which estimated that some 500 fans had been involved in the incidents.
Atletico, who were fined for similar offences last season, said that they had done everything in their power to stop the abuse.
Spain increased the punishments given to clubs for racist abuse in July and Primera Liga sides can now be fined between 6,000 and 18,000 euros depending on the number of fans involved and the action taken to deal with the incident.